Assigm



(No Model.)

' G. M. COOPER.

v SPARK ARRESTER. No. 386,385. Patented July 17, 1888.

w'znessesjg a i I N. PETERS. Photo-Lithographer. Wnhi n nnnnnn c.

UNITED STATES PATENT OFFICE.

GAGE M. COOPER, OF PORT HURON, MICHIGAN, ASSIGNOR OF ONE-HALF TO DANIEL WOOD, OF KOUTS STATION, INDIANA.

SPARK-ARRESTER.

SPECIFICATION forming part of Letters Patent No. 386,385, dated July 17, 1888.

Serial No. 261,?94. (No model.)

T (6 whom it may concern:

Be it known that l, GAGE M. COOPER, of Port Huron, in the county of St. Clair and State of Michigan, have invented a new and useful Improvement in Spark-Arresters, of

which the following is a specification.

My invention consists in an improvement in spark-arrestersinlocomotive-engines, hereinafter fully described and claimed.

to Figure l is a side elevation of a portion of the boiler and of the extensioa'front, partly in section. Fig. 2 is a bottom plan view of my device, and Fig. 3 is a front elevation.

A represents the forward portion of a loco- I5 motive-boiler, and Brepresents the extensionfront, now commonly used for the purpose of arresting sparks.

I represents a blank plate, and J a wire-netting used in said extension-front, the draft from the locomotive-tubes passinginto the extension-front B, under said plate I and netting J, then passing up through said netting and out through the Smokestack O.

D K represent the two exhaust-pipes from the cylinders, which pass through the plate I, are reduced to any desired extent at their ends, and discharge into the lower part of the smoke-stack G to cause a forced draft. At every exhaust of the cylinders the partial 3o vacuum in the smoke-stack causes a strong draft through the boiler-tubes and up through the wire-netting .I, and this throws out of the top of the smoke-stack such sparks as are not arrested by the plate I and the wire-netting 5 J, and these are frequently the cause of fire.

My invention prevents any sparks from passing the wire-netting J in an incandescent state by subjecting said sparksto asteam bath; and the form of mechanism which I prefer to use is as follows, though the specific construction thereof may be varied:

F and H represent two small tubes secured under the forward end of the plate I, each provided with a slit or rows of perforations,

L and M, along the forward side, and having 5 their ends closed. The tube F is connect-ed with the exhaust-pipe K by a small tube, E, and the tube H is connected with theexhaustpipe D by a small pipe, G, so that at each passage of the exhaust-steam through either 0 exhaust-pipe a portion of the steam will pass into one of the tubes F H and will be thrown out in the form of a thin sheet into the extension B. As the draft and sparks follow the exhaust, it is evident that a sheet of steam will be thrown into the extension B before the sparks thrown by each exhaust reach the extension, and that the sparks which come into the extension B will be quenched thereby.

Of course either of the tubes F and H may 6c be used alone and connected with both of the exhaust pipes, though I prefer to use both tubes, or any other construction may be adopted which will throw a small portion of the steam at each exhaust into the extension B \Vhat I claim as my invention, and desire to secure by Letters Patent, is-

1. The combination, with a locomotive-engine having an extension-front, B, and the blank plateI,extendingunderthesmoke-stack, of the exhaust pipes passing through the blank plate and having an opening below said plate for the escape of a part of the exhaust steam into the extension-front beyond the. blank plate, substantially as described.

2. In combination with the extension-front B of a locomotive-engine and the exhaust pipes D K, the slotted tubes F H, connected with said exhaust pipes, substantially as shown and described.

GAGE M. COOPER.

\Vitnesses:

E. G. SPALDING, J. H. MAXWELL. 

